Apparatus for treating molten metals.



E. S. ADAMS. APPARATUS FOR HEATING MOLTEN METALS.

APBLIUATION FILED JULY 22. 1909.

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@9M/meow@ mmm@ FRANCIS S. ADAIVS, OF LEETONIA, OHIO.

APPARATUS FOR TREATING MOLTEN METALS.

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Specification of Letters Patent.

Patented Nov., 23. lltltll.,

Application led July 22, 1909. Serial No. 508,950.

To all whom, 'it may concern:

it known that I, FRANCIS S. ADAMS, a citizen of the United States,residing at Lectcnia, in the county f Columbiana and State of Ghio, haveinvented certain new and useful Improvements in Apparatus for TreatingMolten Metals; and I do declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

This invention relates to an apparatus for treating molten metal for thepurpose of reducing or eliminating the sultur rand the occluded gases. n

The object of the invention is to provide a simple apparatus by means ofwhich the above may be accomplished yeconomically and within the minimumtime, thus increasing the value of the apparatus commercially and forthe useful arts.

Nith this and other objects vin view, the invention consists of certainnovel features of construction, combination and arrangement of parts, aswill be more fully describedv and particularly pointed out in theappended claim.

In the accompanying drawings: The iigure is a side elevation partly invertical section of an apparatus embodying my improvements.

Referring to the drawings for a more par ticular description of theinvention the apparatus comprises a substantially cylindrical vessel 1proyidel with an inner lining 2 of fire brick orother equivalentmaterial and with a removable cover 3. A pot 4: for the molten metal isprovided with an linner lining 5 of re brick and is mounted upon thebottom of the casing. Arranged in the casing with their' lower ends.immersed in the molten metal in the pot 4 is a pair of carbonelectrodes 6 and 7 respectively, which are insulated from the metal inthe pot by the tire brick cylinders 8 and are connected with theconducting wires 9 which may lead to a suitable source ot' current.These electrodes maybe raised or lowered inthe metal to provide greateror less heating surface by the following means:

Flexible elements 11 and 12 are suitably connected with the upper endsof the electrodes and pass over pulleys 13 and 14 mounted upon thehorizontal arms 15. The upper ends of the elements 11 and 12 areconnected with the upper ends of the cylindrical cores 1G which passthrough solenoids 17 supported from the brackets 18. The solenoids areenergized by the wires 19 which connect with batteries 20 While arheostat 2l is arranged in the circuit to increase or decrease thecurrent to lenergize the solenoids to a more or less extent, it beingevident that by increasing the current through the solenoids that thecore 16 will be drawn farther down and raise the electrodes acorresponding extent "while by decreasing the current the electrodeswill be permitted to lower into the metal. v

A vacuum is created in the casing 1 by the vacuum pump which' isconnected by means ot a pipe 23 with the upper end or' the barometriccondenser 24. A. second pipe 25)' leads from the upper end of the casing1 to the upper end or the condenser 24C while a lthird pipe 2Gestablishes communication between the pipe 25and the pipe 23, valves 27,28 and 29 being arranged in the pipes 2G, 23, and 25 respectively.

In practice a vacuum may be created in the casing by means ofthe vacuumpump alone by closing the valves 28 and 29 and opening the valve 27while a vacuum may be created in thc casing by the barometric condenserwhich may be of the steam jet type by closing the valves 27 and 28 andopening valve 29 while the condenser and vacuum pump may operatetogether by closing valve 27, and opening valves 28 and 29 respectively.

In practice, the pot 4 containing the mol.-

ten metal is placed in the casing 1. A Vacuum is then-created in thecasing as heretofore explained to reduce the pressure uponv the metal tonearly zero in order to4 lower the boiling point and to increase thespeed of vapor-ization of the sulfur contained in the metal. be freedmore readily. The hottest metal in the pot rises to the surface and thevapors and gases given ott will take heat from the surface, hence hottermetals will be constantly displacing the surface metal and thismechanical motion will bring every atom of metal to the surface at sometime and its burden will be reduced. To keep the metal in a molten statehot enough to aid in the vaporization, an electric current is passedthrough the bottom of the metal as heretofore explained. By thisnietlnid of eliminating the sulfur, ferro silicon, ferromanganese andaluminum in iron and steel rJihe occluded gases will also da, @www thepracce of poing Soppe? in L @filming of copper cm1 be dlssgensfei with.,in eliminating the sulfur the @ms and. Suiids broken up uml combine und.as sukui: dioxid. Wyhlen l; is found. im the@ is not enough oxid pfesem;'to cams@ al?.

vconnection wih fthe accompanying drawvacuum in the 2, of e'acmodes in*die pot, means for passing a Current th'ough ih@ eleclofes t@ heim themami and elecitomrngrlei means 0r raising or l0w- @ring ik@ eeotiodegsaid means comp'siiig soieiioidss zii-ranged in the casing, corespassing ihiwgh the soenois, ielble elements hat fwn me 'upper 0iE 'thecoi'- and the ei-ecrodes, :L 20u30@ of Climent for ih@ Soleno'iis undmeans 3E@ Vmfying the surfent ihmigii 'the sgenid En testimony whereof Ihave inw/samt@ set han@ 'bwo suiaisciibng fr/iimesses.

